End bearing for rolls.



ate'nt'ed Dec. I8, 1900.

No. 664,25I. P m. J. FOLEY & G..L. ROGERS. END BEARING FOR BULLS.

(Application filed Apr. 5, 1900.v

(No Model.)

THE NORRIS PiTERS 0a., PHUTD-LIYHOH w'sumum n; a a

UNITED STATES PATENT .CFFICE.

MICHAEL FOLEY AND GUY L. ROGERS, OF CLOQUET, MINNESOTA;

END BEARING FOR ROLLS.

SPECIFICATION forming part of LettersPatent No. 664,251, dated December18, 1900.

Application filed April 5, 1900; Serial No. 11,784. No model.)

' Bearings for Calender-Rolls, of which the following is a full, clear,and exact specification, reference being had therein to the accompanyingdrawings, in which- Figure 1 is an end elevation of a portion of acalendering-stack, showing several rolls provided with our improved endbearing; Fig. 2, a horizontal section through the side frames, showingone of the devices in plan;

and Fig. 3, a vertical section showing the adjustable end bearing-block.

This invention has reference to that class of calendering-machines inwhich a vertical series of rolls resting one upon the other areemployed, the ends of the roll-shafts being journaled in boxesvertically slidable in the frame-standards. In high-speedcalendaringmachines of this sort the rolls have a tendencyto crowdendwise against-the journalboxes, which causes undue friction andheating at the ends of the rolls, which results in a considerable lossof power expended in driving the rolls and also in a loss of paper andtime.

It is the object of our invention to avoid this difficulty; and theinvention consists, essentially, in mounting upon one or more of thejournal-boxes a supporting-yoke carrying an adjustable end bearingarranged in axial alinement with the shaft of the roll, so as to bearendwise directly on the end of the roll, whereby the end thrust of theroll may be nicely adjusted and equalized, as more fully hereinafter setforth.

Referring to the drawings by reference-letters, a designates thecalender-rolls; b, the journal-boxes, through which the ends of theshafts of the calender-rolls pass, and c the frame-standards, in whichthe boxes b vertically slide in the usual manner. Bolted to the outerface of each journal-box is a .yoke or archd, which extends horizontallyacross the center of the journal-box, its central part lying near to andslightly beyond the end of the shaft of the roll. Carried by this yokeand bearing upon the end of the shaft is a bearing-block 6, preferablyof lignunr-vitae, which is adjustably supported on the yoke by means ofa screw bolt f, which is tapped through the yoke and is connected by aswivel to theouter face of the plate g, rigidly fastened to thebearing-block c, said plate g being provided with outward-extendingflanges h, which respectively engage the upper and lower edges of theyoke and guide the bearing-block in its inward and outward movements andprevent its rotating, the screw-bolt being provided with a lock-nut 'L'to lock the parts in their adjusted position.

It will be observed that by adjusting and locking the end bearing-blocke, which bears directly upon-the axial center of the rollshaft, theendwise pressure of the roll against the bearing-ring on the inner sideof the journal-box may be nicely regulated. In this way the end thrustof the roll may be properly distributed between the main bearing at theinner side of the journal-box and the auxiliary hearing at the extremeouter end of the shaft, it being preferable to so adjust the devicesthat most of the thrust shall be taken up by the auxiliary bearing,whereby undue friction between the end of the roll and the journal-boxand the consequent overheating of the parts are avoided and considerablesavingin time and paper is effected. It will be observed that it isessential that the auxiliary end hearing be supported entirely on thejournal-box, so that it will move bodily vertically with the same as thecalender-rolls are adjusted.

As the journal-boxes of calendering-machines are usually cooled bycirculating'water through them, it is obvious that any thrusthearingwhich forms a part of the box cannot be employed upon such bearings,because the journal-box must be closed permanently and be water-tight.It will be observed that our invention avoids this objection, as it iswholly outside of the journal-box, permitting the journal of the roll toextend entirely through and beyond the outer side of its box. It isfurther essential that the end bearing or step must be independent ofthe journal-box and be detachable therefrom, so that it may be attachedto any stack of rolls and be changed from one roll to another as theexigencies of the case may require.

We have found that it is not necessary to have one of the steps on eachbox, as there are times when all the rolls do not crowd, so that byhaving several of the yokes or steps they can be changed from one rollto the other at will and without stopping the machine or losing ordestroying paper. It is also essential that the yoke be so constructedthat it may be applied to journals of varying length, which would bepractically impossible if the part carrying the end bearing-block were apart of the journal box proper.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is-

In combination, a frame, a journal-box supported thereon, a rolljournaled in said box the end of its journal projecting through andbeyond said box, a yoke secured to the outer side of said box andextending across the axial line of the roll, a wooden antifrictioiibearing-block bearing on the extremeend of the roll-journal, asupporting-plate secured to the rear side of the bearing-block,outwardextending arms on said plate and slidably en'- gaging the yoke toprevent the rotation of the block, an ad justing-screw carried by theyoke axially in line with the roll and connected by a swivel to thesupporting-plate, and means for locking said screw, substantially asdescribed and for the purpose set forth.

In testimony whereof we hereunto afiix our signatures, in the presenceof two witnesses, this 21st day of March, 1900.

MICHAEL J. FOLEY. GUY L. ROGERS.

Witnesses:

F. E. FEATHERSTON, JOHN D. CAREY.

